Finding the Fourth Proportional to 111,845.60, 154,353.31 and 64,106.90

Step by Step Solution

1. Step 1: Write the proportion equation
   111,845.60 : 154,353.31 = 64,106.90 : x
2. Step 2: Convert to fraction form
   111,845.60/154,353.31 = 64,106.90/x
3. Step 3: Cross multiply
   111,845.60x = 154,353.31 × 64,106.90
4. Step 4: Simplify right side
   111,845.60x = 9,895,112,208.84
5. Step 5: Solve for x
   x = 9,895,112,208.84/111,845.60
6. Step 6: Final answer
   x = 88,471.18